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Finding the Fourth Proportional to 659,787.65, 910,510.85 and 357,981.41

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Solution

The fourth proportional to 659,787.65, 910,510.85 and 357,981.41 is: 494,016.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,787.65 : 910,510.85 = 357,981.41 : x
  2. Step 2: Convert to fraction form
    659,787.65/910,510.85 = 357,981.41/x
  3. Step 3: Cross multiply
    659,787.65x = 910,510.85 × 357,981.41
  4. Step 4: Simplify right side
    659,787.65x = 325,945,956,113.39
  5. Step 5: Solve for x
    x = 325,945,956,113.39/659,787.65
  6. Step 6: Final answer
    x = 494,016.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.